Just to refresh my memory.... the interlaced part of 1080i means that 30 times a second half of the scan lines are refreshed alternating with the second half of scan lines in order to come up with 2 X 30 for 60 hz? The assumption being that the eye will be drawn to the most recently refreshed scan line and not concern itself all that much with the older non-refreshed one?

edit... ok not exactly as I described it above, the non-active scan lines aren't visible so you're actually only seeing 1/2 of the image at a time.

Pretty funny looking at the google responses that come up, most of them seem to be from 5+ years ago, and really the answer seems to be that it's a personal preference thing outside of the motion blur for things like sports.

Guess I'll just have to play with it a bit, although I'm inclined to stick with the default 720P if I don't see much difference.